The spontaneity of a chemical reaction or physical process is primarily determined by the change in Gibbs Free Energy (∆G). The relationship is defined by the equation: ∆G = ∆H - T∆S, where ∆H is the change in enthalpy, T is the absolute temperature, and ∆S is the change in entropy. - If ∆G 0, the process is non-spontaneous under constant temperature and pressure (the reverse process is spontaneous). - If ∆G = 0, the system is at equilibrium.
A reaction is spontaneous when
Asked in WBPSC CS Prelims 2017 · Topic: Physical and Chemical Changes, Solution (Energy Changes in Chemical Reactions (Exothermic and Endothermic Processes))
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